package com.neutech.controller;

import com.google.gson.Gson;
import com.neutech.entity.User;
import com.neutech.service.CartService;
import com.neutech.service.impl.CartServiceImpl;

import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.io.PrintWriter;

@WebServlet(urlPatterns = "/cart/updateQuantity")
public class UpdateCartQuantity extends HttpServlet {

    private CartService cartService = new CartServiceImpl();

    @Override
    protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        //校验参数
        User user = (User) req.getSession().getAttribute("user");
        //调用业务层


        PrintWriter out = resp.getWriter();

        out.print(new Gson().toJson(cartService.updateQuantityById(Integer.parseInt(req.getParameter("id")),
                Integer.parseInt(req.getParameter("quantity")), user.getId())));
        out.close();
    }
}
